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https://issues.apache.org/jira/browse/KAFKA-4247?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=15543346#comment-15543346
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ASF GitHub Bot commented on KAFKA-4247:
---------------------------------------

GitHub user rnpridgeon opened a pull request:

    https://github.com/apache/kafka/pull/1953

    KAFKA-4247: remove root from traversal path

    

You can merge this pull request into a Git repository by running:

    $ git pull https://github.com/rnpridgeon/kafka KAFKA-4247

Alternatively you can review and apply these changes as the patch at:

    https://github.com/apache/kafka/pull/1953.patch

To close this pull request, make a commit to your master/trunk branch
with (at least) the following in the commit message:

    This closes #1953
    
----
commit 9b789c2b76e02e2a327d448b2119082b8274e772
Author: rnpridgeon <ryan.n.pridg...@gmail.com>
Date:   2016-10-03T20:20:18Z

    KAFKA-4247: remove root from traversal path

----


> kafka-run-class has potential to add a leading colon to classpath
> -----------------------------------------------------------------
>
>                 Key: KAFKA-4247
>                 URL: https://issues.apache.org/jira/browse/KAFKA-4247
>             Project: Kafka
>          Issue Type: Bug
>          Components: KafkaConnect
>            Reporter: Ryan P
>            Assignee: Ryan P
>
> https://github.com/confluentinc/kafka/blob/trunk/bin/kafka-run-class.sh#L128-L133
> In the event CLASSPATH has not yet been populated this will result in 
> :$file 
> Normally this wouldn't be a problem however Connect's AbstractClassHearder 
> uses ClasspathHelper.forJavaClassPath() to collect it's eligible classes. 
> With a leading Colon you will endup with builder[0] = null which translates 
> to the working directory. 
> java -cp ":" test
> []
> java -cp ":Users" test
> [file:/Users/ryan/, file:/Users/ryan/Users]
> This is problematic if the script was run from the root directory since 
> Reflections will scan the directories recursively. Ultimately leading to a 
> situation where the entire FileSystem is scanned. This has proven problematic 
> for some Docker installations. 
> Typically this is worked around by editing the the kafka-run-class script 
> however I think we should handle this within Connect itself by excluding the 
> root directory. 
>  



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